Fujitsu cpu

High performance High reliability Low power consumption 45 nanometer process technology

The K computer, uses a "SPARC64™ VIIIfx" CPU designed and developed by Fujitsu. The features of this CPU are described below. 45 nanometer process technology is employed in the "SPARC64™ VIIIfx CPU to provide a number of advantages. If you drew complex electric circuit using 1-mm wide wires, it would turn out to be the size of an athletic field. But if you make the wire as thin as possible the same circuit can be reduced to the size of a postage stamp. As the level of integration increases the wire length in the circuit also becomes shorter and the number of cores, the base units that perform calculations, increase. This increases the overall performance. At the same time, since this miniaturization also decreases the number of components, the failure rate also decreases. Furthermore, the smaller the physical circuit size, the greater the reduction in power consumption. Let's look at the approaches to achieving "high performance," "high reliability," and "low power consumption" in the SPARC64™ VIIIfx.